<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            width: 100px;
            height: 100px;
            border: 1px solid red;
            padding: 10px;
            /* margin-left: 10px; */
            /* margin-top: 10px; */
        }
    </style>
</head>
<body>
    
    <div class="box"></div>



    <script>

// offsetHeight  盒子的height+padding+border

var  box=document.querySelector('.box')

console.log(box.style.height,'高度1');
console.log(box.offsetHeight,'高度2');
console.log(box);
    </script>
</body>
</html>